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UUK weather forecast: Thursday will be sunny for most of the country (Image: Met Office)

Coral Spokesman Harry Aitkenhead said: "An October wedding always runs the risk of inclement weather and with a wet October forecast we make it odds-on that the newlyweds will need an umbrella on their carriage ride through Windsor after tying the knot."

What is an Indian Summer?

According to the Met Office, an Indian summer is the name used “to describe a warm, calm spell of weather occurring in autumn, especially in October and November.

“The phrase is thought to come from America and is based on the warm conditions when Native American Indians chose to hunt.

UK weather forecast: An Indian Summer is on its way (Image: Getty)

“When experienced in the UK the weather can often be more like it would on a spring or summer day.”

The warmest day for the season in recent years was a sweltering 29.9C on October 1, 2011 in Gravesend, Kent.

Anything over 23.6C this week will beat the this previous record-breaking temperature.